Tim O'Reilly @CommunityONE General Session explained Web 3.0 with this interesting sentence: "When we do not have to type - Web 3.0 will come".In web 3.0 the content will be automatically generated by the user (not necessarily with keyboard) and not provided explicitly. (Is this the beginning of the matrix :-)).

So I presented the advent of Web 3.0 at JAX (before JavaONE) talking about FreeTTS (speech synthesizer) and Sphinx (open source speech recognition) in "Cool but forgotten" session :-) .

Also Web 2.0 was explained beyond love & peace:The essence of web 2.0 is making software commodity and massive databases provide the (sometimes) proprietary added value.I like the explanation more, than AJAX, Social Networking etc.